﻿package gdca.webservice.common;

import java.io.IOException;
import javax.servlet.*;

public class SetEncodingFilter implements Filter {

	public SetEncodingFilter() {
		encoding = null;
		filterConfig = null;
		ignore = true;
	}

	public void destroy() {
		encoding = null;
		filterConfig = null;
	}

	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws ServletException, IOException {
		if (ignore || request.getCharacterEncoding() == null)
			request.setCharacterEncoding(selectEncoding(request));
		chain.doFilter(request, response);
	}

	public void init(FilterConfig filterConfig) throws ServletException {
		this.filterConfig = filterConfig;
		encoding = filterConfig.getInitParameter("encoding");
		String value = filterConfig.getInitParameter("ignore");
		if (value == null)
			ignore = true;
		else if (value.equalsIgnoreCase("true") || value.equalsIgnoreCase("yes"))
			ignore = true;
		else
			ignore = false;
	}

	protected String selectEncoding(ServletRequest request) {
		return encoding;
	}

	public FilterConfig getFilterConfig() {
		return filterConfig;
	}

	public void setFilterConfig(FilterConfig filterConfig) {
		this.filterConfig = filterConfig;
	}

	protected String encoding;

	protected FilterConfig filterConfig;

	protected boolean ignore;
}
